So the other day it was about -5 outside so I started my car extra early. came back about 10 min later and ALL of the oil was on the ground and the car was making a terrible noise. it sounded like a bad belt would but alot louder. i turned off the car towed it to the shop and they found it was a bad oil cooler seal. They put a new one in and no more leak. motor did not make that horrible noise after they put oil in it. started driving it away and immediatly i noticed this humming noise..sounded like a jet engine around 2500 rpm and it goes away after 3500 rpm we'll say. its not super loud but i did notice it. I can really only hear it on the inside of the car. Any clue what it could be? the oil sprayed everywhere when it came out. and i would estimate the car was idling with no oil or very little oil for a few minutes.
*It more sounds like I have a turbo installed. but I dont. It's all stock.